91946018 has 16 divisors (see below), whose sum is σ = 139889376. Its totient is φ = 45321120.

The previous prime is 91946017. The next prime is 91946021. The reversal of 91946018 is 81064919.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (91946011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41630 + ... + 43782.

It is an arithmetic number, because the mean of its divisors is an integer number (8743086).

Almost surely, 2^91946018 is an apocalyptic number.

91946018 is a deficient number, since it is larger than the sum of its proper divisors (47943358).

91946018 is a wasteful number, since it uses less digits than its factorization.

91946018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2449.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 91946018 is about 9588.8486274422. The cubic root of 91946018 is about 451.3474313293.

The spelling of 91946018 in words is "ninety-one million, nine hundred forty-six thousand, eighteen".